#!/bin/bash #Function:自动备份给定列表中的目录或文件,并且可以保留N天备份的档案。
#可备份至远程主机指定的目录下,但需本机能免密码登录到远程主机,用到ssh-keygen
#该脚本分为两个文件:执行文件backup.sh和备份项目文件bakfile.lst,两个文件必须位于同一目录下
#Author:JianJie #Date:2016/8/26 #Usage:sudo bash backup.sh & #Version:v2 ###############################################################
logFile=/backup/local/log/`date +"%Y-%m"`.log
#日志文件
logDir=/backup/local/log myDate=`date +"%Y-%m-%d"`
bakFileLst=bakfile.lst
#需要备份的文件或目录放到该文件中 bakDir=/backup/local
#备份至此目录 keepDays=5
#文件保留天数 remoteHost="rhel6.8:rhel7"
#需要备份至远程主机的地址,注意本机需免密码登陆到远程主机,多个主机地址或主机名之间用‘:’分割 remoteHostDir=/backup/$HOSTNAME
#远程主机备份目录 currentDir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
#当前运行脚本所在的目录
###############################################################
#判断日志目录和日志文件是否存在
if [ ! -d $logDir ];then
mkdir -p $logDir
touch $logFile else
if [ ! -e $logFile ];then
touch $logFile
fi
fi
#开始记录日志
echo "Backup start at $(date +"%Y-%m-%d %H:%M:%S")" >> $logFile
echo "--------------------------------------------------------" >> $logFile
echo " " >> $logFile
#判断保存备份文件的文件列表'bakfile.lst'是否存在
if [ ! -e $currentDir/$bakFileLst ];then
echo "Error:Important file [$currentDir/$bakFileLst] has been lost,now creating..." >> $logFile
touch $currentDir/$bakFileLst
echo "The file [$currentDir/$bakFileLst] has been created,but you still need to write data in it!" >> $logFile
echo " " >> $logFile echo "--------------------------------------------------------" >> $logFile
echo "Backup end at $(date +"%Y-%m-%d %H:%M:%S")" >> $logFile
echo " " >> $logFile
exit 3
fi
paths=`cat $currentDir/$bakFileLst`
for path in $paths
do
baseName=`echo "$path" | xargs basename`
oldFile=$bakDir/$baseName.$(date --date="$keepDays days ago" +"%Y-%m-%d").txz
#判断路径中备份的是文件还是目录
#若路径中要备份的是文件,则先进入指定路径中的上一级
if [ -f "$path" ];then
#进入指定路径中的上一级目录
cd `echo "$path" | cut -d "/" -f 1-$(echo "$path"|gawk -F"/" '{print NF-1}')`
#若要备份的文件已经存在,则不再重复备份
if [ -f $bakDir/$baseName.$myDate.txz ];then
echo "Backup file [$bakDir/$baseName.$myDate.txz] already exists!" >> $logFile
else
cp -RHpf $baseName $bakDir
cd $bakDir
#备份档案格式为.tar.xz,可根据需要调整,如.tar.gz或者.tar.bz2
tar -cJf $baseName.$myDate.txz $baseName
#将备份后的文件通过scp备份到远程主机
for host in $(echo "$remoteHost" | sed 's/:/ /g')
do
scp -o ConnectTimeout=10 $baseName.$myDate.txz $host:$remoteHostDir >>$logFile 2>/dev/null &&
echo "Successful backup [$path] to the remote host:[$host:$remoteHostDir]" >>$logFile ||
echo "Backup [$path] to the remote host:[$host:$remoteHostDir] failed,please check it" >>$logFile
done
#备份完成,删除拷贝过来的源文件
rm -rf $baseName
echo "Backup [$path] done into [$bakDir] successfuly!" >> $logFile
#若存在N天前旧文件,则删除它
if [ -f $oldFile ];then
rm -rf $oldFile
echo "[$oldFile],delete old file successfuly!" >> $logFile
fi
fi
#路径中备份的是目录
elif [ -d "$path" ];then
#先判断要备份的文件是否已经存在,若存在则不再重复备份
if [ -f $bakDir/$baseName.$myDate.txz ];then
echo "Backup file [$bakDir/$baseName.$myDate.txz] already exists!" >> $logFile
else
cd $path
cd ..
cp -RHpf $baseName $bakDir
cd $bakDir
tar -cJf $baseName.$myDate.txz $baseName
#将备份后的文件通过scp备份到远程主机
for host in $(echo "$remoteHost" | sed 's/:/ /g')
do
scp -o ConnectTimeout=10 $baseName.$myDate.txz $host:$remoteHostDir >>$logFile 2>/dev/null &&
echo "Successful backup [$path] to the remote host:[$host:$remoteHostDir]" >>$logFile ||
echo "Backup [$path] to the remote host:[$host:$remoteHostDir] failed,please check it" >>$logFile
done
#备份完成,删除拷贝过来的源文件
rm -rf $baseName
echo "Backup [$path] done into [$bakDir] successfuly!" >> $logFile
#若存在N天前旧文件,则删除它
if [ -f $oldFile ];then
rm -rf $oldFile
echo "[$oldFile],delete old file successfuly!" >> $logFile
fi
fi
else
echo "Wrong path or file:[$path],please check it" >>$logFile fi done echo " " >> $logFile echo "-------------------------------------------" >> $logFile
echo "Backup end at $(date +"%Y-%m-%d %H:%M:%S")" >> $logFile
echo " " >> $logFile
exit 0